Full GTR Waterproofing System

A fully bonded waterproofing system designed for all sides of underground structures, meeting the performance requirements of the Framework Act on Low Carbon, Green Growth.

Composite waterproofing system combining TurboSheet GTR, a high-adhesion waterproofing membrane made with recycled natural latex, and Pre-GTR, a pre-applied waterproofing membrane integrally bonded to cast-in-place concrete.

New Construction Technology No. 740
Patent 10-0987602 (Wall)
Patent 10-0930421 (Floor)

Waterproofing of Underground Expressway Structures on Coastal Reclaimed Land Using the Full GTR System

Marina Coastal Expressway (MCE), Singapore – Contracts 482 & 486

Construction Period
2009–June 2013

Project Scale
Total length: 2.4 km
Contract 482: 0.56 km underground expressway and 0.44 km of access roads
Contract 486: 1.1 km underground tunnel and one MRT station

Key Project Challenge
Construction of major underground infrastructure on coastal reclaimed land, requiring reliable protection against groundwater ingress under challenging site conditions.

Why Renew Was Selected
The Full GTR Waterproofing System was applied to the underground structures to provide continuous waterproofing and prevent water migration between the waterproofing layer and the concrete structure.

Zero Leakage Reported for 7 Years After Completion (as of January 2021)

Incheon Airport Railroad connection facility expansion site

Jamsil-gil Transfer Center

Bujeon-Masan double-track railway

Seongnam Seongeun School

Turbo Sheet GTR
A self-adhesive waterproofing membrane combining an eco-friendly recycled rubber-based adhesive layer with a durable membrane sheet. It adheres directly to concrete surfaces without the need for primer or heat application.

Pre-GTR Pre-Applied Waterproofing Sheet
A composite waterproofing membrane with a water-reactive polymer coating, designed to bond integrally with freshly poured concrete and provide continuous waterproofing protection.

GTR GEL / GTR GEL S
A water-reactive polymer waterproofing material designed to maintain strong adhesion to concrete and accommodate substrate movement while providing continuous waterproofing performance.

Turbo Sheet GTR
A self-adhesive sheet integrating eco-friendly, high-adhesion recycled rubber and a membrane sheet, serving as a waterproofing material that adheres to concrete surfaces using the stickiness of an adhesive gel without the application of primer or heat.

Pre-GTR reverse casting waterproofing sheet
A composite sheet integrating a water-reactive polymer coating material capable of reverse casting and a membrane sheet, serving as a waterproofing material capable of integrated adhesion to the poured concrete.

GTR GEL / GTR GEL S
A composite sheet integrating a water-reactive polymer coating material capable of reverse casting and a membrane sheet, serving as a waterproofing material capable of integrated adhesion to the poured concrete.